Open Learning at Harvard
At Harvard Extension School, free and open learning is hardly a new concept. In fact, the Extension School was founded with this mission in mind: to create an affordable way for any motivated student to take courses at Harvard. We stay true to this mission today, offering several free courses and nearly 800 for-credit courses at reasonable tuition rates.

Pros - Videos of real-life lectures on a variety of topics
Top instructors
Option to give course feedback on some courses
Suggested related programs
No registration required

Cons - No search or filtering tools
Variable course format and resource type
No interaction with peers or staff

Ranked 2nd best university in the World University Rankings 2014-2015, it is of no surprise that Harvard University offers some of the best courseware in terms of quality, instruction and materials. For the committed individual who doesn't mind sifting through the content without a search tool, this is a great place to find great content.